My grandfather had collapsed 4 days back due to low bp and admitted to a hospital immediately. He recovered within an hour and was on no medication for 1.5 days. Post that his bp is continuously flutuating between 150/90 to 170/100 despite of taking medicines efnocor 20mg twice and some other drugs. His ecg and echo reports are normal as per doc and is still hospitalised. is there something serious to worry about? Should we change the hospital? He presently does not have any pain. However his sodium is little low.